Create a new SmartList and select Donations for the list. Select Donation Dates and then Created Date from the criteria category dropdown list. Select a date that includes all donations acknowledged before you converted to GiftWorks. Name and Save the SmartList
Select Run a SmartUpdate for List from the Related Action menu. Click on Acknowledge donations and click Next. Choose your options to update the SmartList and click on Acknowledge Donations. The Acknowledgement Status for each prior donation will be updated as having been acknowledged.
If you have donations that still need to be acknowledged, you can create a SmartList of donations that were made since the import when you converted to GiftWorks